AJMRTC 220V AC Digital LED Temperature Controller, Heating Cooling Thermostat Switch with Waterproof NTC 10K Sensor Probe, Adjustable Hysteresis for Incubator, Greenhouse, Aquarium, Refrigerator Tempe

AJMRTC 220V digital thermostat is a microcomputer temperature control module designed for automatic temperature management. It uses a matched waterproof NTC 10K probe to detect ambient temperature and triggers the built-in relay to turn heating or cooling equipment on and off according to your preset threshold. The clear LED screen shows current temperature and target setting directly, and simple button operation lets users adjust set temperature, hysteresis value and switch between heat/cool modes. The hysteresis setting prevents the relay from rapidly switching on and off caused by tiny temperature fluctuations. All configuration data is automatically saved when power cuts off, so you do not need to reset parameters after power recovery. The waterproof NTC probe can be placed in water, soil or high-humidity spaces. It is widely used for incubators, aquariums, greenhouses, refrigerators, fermentation tanks and DIY constant-temperature projects. Please note the load must not exceed the rated relay current; use an external contactor for high-power equipment. Strictly follow the wiring diagram to avoid electric shock or device burnout.

Specifications

Brand: AJMRTC

Working Voltage: AC 220V

Display: LED Digital Display

Sensor Type: NTC 10K Waterproof Probe

Temperature Range: -50°C ~ 110°C

Control Modes: Heating / Cooling Switchable

Relay Rated Current: 10A

Function: Adjustable Hysteresis, Power-off Memory

Probe Cable Length: 1 Meter

Application: Incubator, Aquarium, Greenhouse, Refrigerator, Constant Temperature DIY